Question

Луч переходит из воды в алмаз. Угол падения равен 30°. Найдите угол преломления. Показатели преломления: вода 1,3; алмаз 2,4.

Answer 1

Sina/sinb=n2/n1
sinb=sina*n1/n2=0,5*1,5/1,32=0,5682
b=35 градусов( с минутами, точнее по таблицам Брадиса)

Answer 2

Calculation of the Angle of Refraction

To find the angle of refraction when light passes from water to diamond, we can use Snell's law, which relates the angles of incidence and refraction to the refractive indices of the two media involved.

The formula for Snell's law is:

n1 * sin(θ1) = n2 * sin(θ2)

Where: - n1 is the refractive index of the first medium (water in this case) - θ1 is the angle of incidence - n2 is the refractive index of the second medium (diamond in this case) - θ2 is the angle of refraction

Given: - Angle of incidence (θ1) = 30° - Refractive index of water (n1) = 1.3 - Refractive index of diamond (n2) = 2.4

We can rearrange Snell's law to solve for θ2:

θ2 = arcsin((n1 * sin(θ1)) / n2)

Substituting the given values:

θ2 = arcsin((1.3 * sin(30°)) / 2.4)

Now, let's calculate the value of θ2 using the given values and the formula above.

Using a scientific calculator or an online calculator, we find that:

θ2 ≈ 20.9°

Therefore, the angle of refraction when light passes from water to diamond is approximately 20.9°